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<a name="1" href="#1">1</a>   <em class="jxr_comment">/*</em>
<a name="2" href="#2">2</a>   <em class="jxr_comment"> *  Copyright 2001-2005 Stephen Colebourne</em>
<a name="3" href="#3">3</a>   <em class="jxr_comment"> *</em>
<a name="4" href="#4">4</a>   <em class="jxr_comment"> *  Licensed under the Apache License, Version 2.0 (the "License");</em>
<a name="5" href="#5">5</a>   <em class="jxr_comment"> *  you may not use this file except in compliance with the License.</em>
<a name="6" href="#6">6</a>   <em class="jxr_comment"> *  You may obtain a copy of the License at</em>
<a name="7" href="#7">7</a>   <em class="jxr_comment"> *</em>
<a name="8" href="#8">8</a>   <em class="jxr_comment"> *      <a href="http://www.apache.org/licenses/LICENSE-2.0" target="alexandria_uri">http://www.apache.org/licenses/LICENSE-2.0</a></em>
<a name="9" href="#9">9</a>   <em class="jxr_comment"> *</em>
<a name="10" href="#10">10</a>  <em class="jxr_comment"> *  Unless required by applicable law or agreed to in writing, software</em>
<a name="11" href="#11">11</a>  <em class="jxr_comment"> *  distributed under the License is distributed on an "AS IS" BASIS,</em>
<a name="12" href="#12">12</a>  <em class="jxr_comment"> *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</em>
<a name="13" href="#13">13</a>  <em class="jxr_comment"> *  See the License for the specific language governing permissions and</em>
<a name="14" href="#14">14</a>  <em class="jxr_comment"> *  limitations under the License.</em>
<a name="15" href="#15">15</a>  <em class="jxr_comment"> */</em>
<a name="16" href="#16">16</a>  <strong class="jxr_keyword">package</strong> org.goda.time;
<a name="17" href="#17">17</a>  
<a name="18" href="#18">18</a>  <em class="jxr_javadoccomment">/**</em>
<a name="19" href="#19">19</a>  <em class="jxr_javadoccomment"> * Defines a partial time that does not support every datetime field, and is</em>
<a name="20" href="#20">20</a>  <em class="jxr_javadoccomment"> * thus a local time.</em>
<a name="21" href="#21">21</a>  <em class="jxr_javadoccomment"> * &lt;p&gt;</em>
<a name="22" href="#22">22</a>  <em class="jxr_javadoccomment"> * A &lt;code&gt;ReadablePartial&lt;/code&gt; supports a subset of those fields on the chronology.</em>
<a name="23" href="#23">23</a>  <em class="jxr_javadoccomment"> * It cannot be compared to a &lt;code&gt;ReadableInstant&lt;/code&gt;, as it does not fully</em>
<a name="24" href="#24">24</a>  <em class="jxr_javadoccomment"> * specify an instant in time. The time it does specify is a local time, and does</em>
<a name="25" href="#25">25</a>  <em class="jxr_javadoccomment"> * not include a time zone.</em>
<a name="26" href="#26">26</a>  <em class="jxr_javadoccomment"> * &lt;p&gt;</em>
<a name="27" href="#27">27</a>  <em class="jxr_javadoccomment"> * A &lt;code&gt;ReadablePartial&lt;/code&gt; can be converted to a &lt;code&gt;ReadableInstant&lt;/code&gt;</em>
<a name="28" href="#28">28</a>  <em class="jxr_javadoccomment"> * using the &lt;code&gt;toDateTime&lt;/code&gt; method. This works by providing a full base</em>
<a name="29" href="#29">29</a>  <em class="jxr_javadoccomment"> * instant that can be used to 'fill in the gaps' and specify a time zone.</em>
<a name="30" href="#30">30</a>  <em class="jxr_javadoccomment"> *</em>
<a name="31" href="#31">31</a>  <em class="jxr_javadoccomment"> * @author Stephen Colebourne</em>
<a name="32" href="#32">32</a>  <em class="jxr_javadoccomment"> * @since 1.0</em>
<a name="33" href="#33">33</a>  <em class="jxr_javadoccomment"> */</em>
<a name="34" href="#34">34</a>  <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">interface</strong> <a href="../../../org/goda/time/ReadablePartial.html">ReadablePartial</a> {
<a name="35" href="#35">35</a>  
<a name="36" href="#36">36</a>      <em class="jxr_javadoccomment">/**</em>
<a name="37" href="#37">37</a>  <em class="jxr_javadoccomment">     * Gets the number of fields that this partial supports.</em>
<a name="38" href="#38">38</a>  <em class="jxr_javadoccomment">     *</em>
<a name="39" href="#39">39</a>  <em class="jxr_javadoccomment">     * @return the number of fields supported</em>
<a name="40" href="#40">40</a>  <em class="jxr_javadoccomment">     */</em>
<a name="41" href="#41">41</a>      <strong class="jxr_keyword">int</strong> size();
<a name="42" href="#42">42</a>  
<a name="43" href="#43">43</a>      <em class="jxr_javadoccomment">/**</em>
<a name="44" href="#44">44</a>  <em class="jxr_javadoccomment">     * Gets the field type at the specified index.</em>
<a name="45" href="#45">45</a>  <em class="jxr_javadoccomment">     *</em>
<a name="46" href="#46">46</a>  <em class="jxr_javadoccomment">     * @param index  the index to retrieve</em>
<a name="47" href="#47">47</a>  <em class="jxr_javadoccomment">     * @return the field at the specified index</em>
<a name="48" href="#48">48</a>  <em class="jxr_javadoccomment">     * @throws IndexOutOfBoundsException if the index is invalid</em>
<a name="49" href="#49">49</a>  <em class="jxr_javadoccomment">     */</em>
<a name="50" href="#50">50</a>      <a href="../../../org/goda/time/DateTimeFieldType.html">DateTimeFieldType</a> getFieldType(<strong class="jxr_keyword">int</strong> index);
<a name="51" href="#51">51</a>  
<a name="52" href="#52">52</a>      <em class="jxr_javadoccomment">/**</em>
<a name="53" href="#53">53</a>  <em class="jxr_javadoccomment">     * Gets the field at the specified index.</em>
<a name="54" href="#54">54</a>  <em class="jxr_javadoccomment">     *</em>
<a name="55" href="#55">55</a>  <em class="jxr_javadoccomment">     * @param index  the index to retrieve</em>
<a name="56" href="#56">56</a>  <em class="jxr_javadoccomment">     * @return the field at the specified index</em>
<a name="57" href="#57">57</a>  <em class="jxr_javadoccomment">     * @throws IndexOutOfBoundsException if the index is invalid</em>
<a name="58" href="#58">58</a>  <em class="jxr_javadoccomment">     */</em>
<a name="59" href="#59">59</a>      <a href="../../../org/goda/time/DateTimeField.html">DateTimeField</a> getField(<strong class="jxr_keyword">int</strong> index);
<a name="60" href="#60">60</a>  
<a name="61" href="#61">61</a>      <em class="jxr_javadoccomment">/**</em>
<a name="62" href="#62">62</a>  <em class="jxr_javadoccomment">     * Gets the value at the specified index.</em>
<a name="63" href="#63">63</a>  <em class="jxr_javadoccomment">     *</em>
<a name="64" href="#64">64</a>  <em class="jxr_javadoccomment">     * @param index  the index to retrieve</em>
<a name="65" href="#65">65</a>  <em class="jxr_javadoccomment">     * @return the value of the field at the specified index</em>
<a name="66" href="#66">66</a>  <em class="jxr_javadoccomment">     * @throws IndexOutOfBoundsException if the index is invalid</em>
<a name="67" href="#67">67</a>  <em class="jxr_javadoccomment">     */</em>
<a name="68" href="#68">68</a>      <strong class="jxr_keyword">int</strong> getValue(<strong class="jxr_keyword">int</strong> index);
<a name="69" href="#69">69</a>  
<a name="70" href="#70">70</a>      <em class="jxr_javadoccomment">/**</em>
<a name="71" href="#71">71</a>  <em class="jxr_javadoccomment">     * Gets the chronology of the partial which is never null.</em>
<a name="72" href="#72">72</a>  <em class="jxr_javadoccomment">     * &lt;p&gt;</em>
<a name="73" href="#73">73</a>  <em class="jxr_javadoccomment">     * The {@link Chronology} is the calculation engine behind the partial and</em>
<a name="74" href="#74">74</a>  <em class="jxr_javadoccomment">     * provides conversion and validation of the fields in a particular calendar system.</em>
<a name="75" href="#75">75</a>  <em class="jxr_javadoccomment">     * </em>
<a name="76" href="#76">76</a>  <em class="jxr_javadoccomment">     * @return the chronology, never null</em>
<a name="77" href="#77">77</a>  <em class="jxr_javadoccomment">     */</em>
<a name="78" href="#78">78</a>      <a href="../../../org/goda/time/Chronology.html">Chronology</a> getChronology();
<a name="79" href="#79">79</a>  
<a name="80" href="#80">80</a>      <em class="jxr_javadoccomment">/**</em>
<a name="81" href="#81">81</a>  <em class="jxr_javadoccomment">     * Gets the value of one of the fields.</em>
<a name="82" href="#82">82</a>  <em class="jxr_javadoccomment">     * &lt;p&gt;</em>
<a name="83" href="#83">83</a>  <em class="jxr_javadoccomment">     * The field type specified must be one of those that is supported by the partial.</em>
<a name="84" href="#84">84</a>  <em class="jxr_javadoccomment">     *</em>
<a name="85" href="#85">85</a>  <em class="jxr_javadoccomment">     * @param field  a DateTimeFieldType instance that is supported by this partial</em>
<a name="86" href="#86">86</a>  <em class="jxr_javadoccomment">     * @return the value of that field</em>
<a name="87" href="#87">87</a>  <em class="jxr_javadoccomment">     * @throws IllegalArgumentException if the field is null or not supported</em>
<a name="88" href="#88">88</a>  <em class="jxr_javadoccomment">     */</em>
<a name="89" href="#89">89</a>      <strong class="jxr_keyword">int</strong> get(<a href="../../../org/goda/time/DateTimeFieldType.html">DateTimeFieldType</a> field);
<a name="90" href="#90">90</a>  
<a name="91" href="#91">91</a>      <em class="jxr_javadoccomment">/**</em>
<a name="92" href="#92">92</a>  <em class="jxr_javadoccomment">     * Checks whether the field type specified is supported by this partial.</em>
<a name="93" href="#93">93</a>  <em class="jxr_javadoccomment">     *</em>
<a name="94" href="#94">94</a>  <em class="jxr_javadoccomment">     * @param field  the field to check, may be null which returns false</em>
<a name="95" href="#95">95</a>  <em class="jxr_javadoccomment">     * @return true if the field is supported</em>
<a name="96" href="#96">96</a>  <em class="jxr_javadoccomment">     */</em>
<a name="97" href="#97">97</a>      <strong class="jxr_keyword">boolean</strong> isSupported(<a href="../../../org/goda/time/DateTimeFieldType.html">DateTimeFieldType</a> field);
<a name="98" href="#98">98</a>  
<a name="99" href="#99">99</a>      <em class="jxr_javadoccomment">/**</em>
<a name="100" href="#100">100</a> <em class="jxr_javadoccomment">     * Converts this partial to a full datetime by resolving it against another</em>
<a name="101" href="#101">101</a> <em class="jxr_javadoccomment">     * datetime.</em>
<a name="102" href="#102">102</a> <em class="jxr_javadoccomment">     * &lt;p&gt;</em>
<a name="103" href="#103">103</a> <em class="jxr_javadoccomment">     * This method takes the specified datetime and sets the fields from this</em>
<a name="104" href="#104">104</a> <em class="jxr_javadoccomment">     * instant on top. The chronology from the base instant is used.</em>
<a name="105" href="#105">105</a> <em class="jxr_javadoccomment">     * &lt;p&gt;</em>
<a name="106" href="#106">106</a> <em class="jxr_javadoccomment">     * For example, if this partial represents a time, then the result of this</em>
<a name="107" href="#107">107</a> <em class="jxr_javadoccomment">     * method will be the datetime from the specified base instant plus the</em>
<a name="108" href="#108">108</a> <em class="jxr_javadoccomment">     * time from this partial.</em>
<a name="109" href="#109">109</a> <em class="jxr_javadoccomment">     *</em>
<a name="110" href="#110">110</a> <em class="jxr_javadoccomment">     * @param baseInstant  the instant that provides the missing fields, null means now</em>
<a name="111" href="#111">111</a> <em class="jxr_javadoccomment">     * @return the combined datetime</em>
<a name="112" href="#112">112</a> <em class="jxr_javadoccomment">     */</em>
<a name="113" href="#113">113</a>     <a href="../../../org/goda/time/DateTime.html">DateTime</a> toDateTime(<a href="../../../org/goda/time/ReadableInstant.html">ReadableInstant</a> baseInstant);
<a name="114" href="#114">114</a> 
<a name="115" href="#115">115</a>     <em class="jxr_comment">//-----------------------------------------------------------------------</em>
<a name="116" href="#116">116</a>     <em class="jxr_javadoccomment">/**</em>
<a name="117" href="#117">117</a> <em class="jxr_javadoccomment">     * Compares this partial with the specified object for equality based</em>
<a name="118" href="#118">118</a> <em class="jxr_javadoccomment">     * on the supported fields, chronology and values.</em>
<a name="119" href="#119">119</a> <em class="jxr_javadoccomment">     * &lt;p&gt;</em>
<a name="120" href="#120">120</a> <em class="jxr_javadoccomment">     * Two instances of ReadablePartial are equal if they have the same</em>
<a name="121" href="#121">121</a> <em class="jxr_javadoccomment">     * chronology, same field types (in same order) and same values.</em>
<a name="122" href="#122">122</a> <em class="jxr_javadoccomment">     *</em>
<a name="123" href="#123">123</a> <em class="jxr_javadoccomment">     * @param partial  the object to compare to</em>
<a name="124" href="#124">124</a> <em class="jxr_javadoccomment">     * @return true if equal</em>
<a name="125" href="#125">125</a> <em class="jxr_javadoccomment">     */</em>
<a name="126" href="#126">126</a>     <strong class="jxr_keyword">boolean</strong> equals(Object partial);
<a name="127" href="#127">127</a> 
<a name="128" href="#128">128</a>     <em class="jxr_javadoccomment">/**</em>
<a name="129" href="#129">129</a> <em class="jxr_javadoccomment">     * Gets a hash code for the partial that is compatible with the </em>
<a name="130" href="#130">130</a> <em class="jxr_javadoccomment">     * equals method.</em>
<a name="131" href="#131">131</a> <em class="jxr_javadoccomment">     * &lt;p&gt;</em>
<a name="132" href="#132">132</a> <em class="jxr_javadoccomment">     * The formula used must be:</em>
<a name="133" href="#133">133</a> <em class="jxr_javadoccomment">     * &lt;pre&gt;</em>
<a name="134" href="#134">134</a> <em class="jxr_javadoccomment">     *  int total = 157;</em>
<a name="135" href="#135">135</a> <em class="jxr_javadoccomment">     *  for (int i = 0; i &lt; fields.length; i++) {</em>
<a name="136" href="#136">136</a> <em class="jxr_javadoccomment">     *      total = 23 * total + values[i];</em>
<a name="137" href="#137">137</a> <em class="jxr_javadoccomment">     *      total = 23 * total + fieldTypes[i].hashCode();</em>
<a name="138" href="#138">138</a> <em class="jxr_javadoccomment">     *  }</em>
<a name="139" href="#139">139</a> <em class="jxr_javadoccomment">     *  total += chronology.hashCode();</em>
<a name="140" href="#140">140</a> <em class="jxr_javadoccomment">     *  return total;</em>
<a name="141" href="#141">141</a> <em class="jxr_javadoccomment">     * &lt;/pre&gt;</em>
<a name="142" href="#142">142</a> <em class="jxr_javadoccomment">     *</em>
<a name="143" href="#143">143</a> <em class="jxr_javadoccomment">     * @return a suitable hash code</em>
<a name="144" href="#144">144</a> <em class="jxr_javadoccomment">     */</em>
<a name="145" href="#145">145</a>     <strong class="jxr_keyword">int</strong> hashCode();
<a name="146" href="#146">146</a> 
<a name="147" href="#147">147</a> <em class="jxr_comment">// NOTE: This method should have existed in Joda-Time v1.0.</em>
<a name="148" href="#148">148</a> <em class="jxr_comment">// We STRONGLY recommend that all implementations of ReadablePartial</em>
<a name="149" href="#149">149</a> <em class="jxr_comment">// implement this method, as per AbstractPartial.</em>
<a name="150" href="#150">150</a> <em class="jxr_comment">// The simplest way to do this is to extend AbstractPartial.</em>
<a name="151" href="#151">151</a> <em class="jxr_comment">// v2.0 of Joda-Time will include this method in this interface.</em>
<a name="152" href="#152">152</a> <em class="jxr_comment">//    //-----------------------------------------------------------------------</em>
<a name="153" href="#153">153</a> <em class="jxr_comment">//    </em><em class="jxr_javadoccomment">/**</em>
<a name="154" href="#154">154</a> <em class="jxr_javadoccomment">//     * Compares this partial with another returning an integer</em>
<a name="155" href="#155">155</a> <em class="jxr_javadoccomment">//     * indicating the order.</em>
<a name="156" href="#156">156</a> <em class="jxr_javadoccomment">//     * &lt;p&gt;</em>
<a name="157" href="#157">157</a> <em class="jxr_javadoccomment">//     * The fields are compared in order, from largest to smallest.</em>
<a name="158" href="#158">158</a> <em class="jxr_javadoccomment">//     * The first field that is non-equal is used to determine the result.</em>
<a name="159" href="#159">159</a> <em class="jxr_javadoccomment">//     * Thus a YearHour partial will first be compared on the year, and then</em>
<a name="160" href="#160">160</a> <em class="jxr_javadoccomment">//     * on the hour.</em>
<a name="161" href="#161">161</a> <em class="jxr_javadoccomment">//     * &lt;p&gt;</em>
<a name="162" href="#162">162</a> <em class="jxr_javadoccomment">//     * The specified object must be a partial instance whose field types</em>
<a name="163" href="#163">163</a> <em class="jxr_javadoccomment">//     * match those of this partial. If the parial instance has different</em>
<a name="164" href="#164">164</a> <em class="jxr_javadoccomment">//     * fields then a ClassCastException is thrown.</em>
<a name="165" href="#165">165</a> <em class="jxr_javadoccomment">//     *</em>
<a name="166" href="#166">166</a> <em class="jxr_javadoccomment">//     * @param partial  an object to check against</em>
<a name="167" href="#167">167</a> <em class="jxr_javadoccomment">//     * @return negative if this is less, zero if equal, positive if greater</em>
<a name="168" href="#168">168</a> <em class="jxr_javadoccomment">//     * @throws ClassCastException if the partial is the wrong class</em>
<a name="169" href="#169">169</a> <em class="jxr_javadoccomment">//     *  or if it has field types that don't match</em>
<a name="170" href="#170">170</a> <em class="jxr_javadoccomment">//     * @throws NullPointerException if the partial is null</em>
<a name="171" href="#171">171</a> <em class="jxr_javadoccomment">//     * @since 2.0</em>
<a name="172" href="#172">172</a> <em class="jxr_javadoccomment">//     */</em>
<a name="173" href="#173">173</a> <em class="jxr_comment">//    int compareTo(Object partial);</em>
<a name="174" href="#174">174</a> 
<a name="175" href="#175">175</a>     <em class="jxr_comment">//-----------------------------------------------------------------------</em>
<a name="176" href="#176">176</a>     <em class="jxr_javadoccomment">/**</em>
<a name="177" href="#177">177</a> <em class="jxr_javadoccomment">     * Get the value as a String in a recognisable ISO8601 format, only</em>
<a name="178" href="#178">178</a> <em class="jxr_javadoccomment">     * displaying supported fields.</em>
<a name="179" href="#179">179</a> <em class="jxr_javadoccomment">     * &lt;p&gt;</em>
<a name="180" href="#180">180</a> <em class="jxr_javadoccomment">     * The string output is in ISO8601 format to enable the String</em>
<a name="181" href="#181">181</a> <em class="jxr_javadoccomment">     * constructor to correctly parse it.</em>
<a name="182" href="#182">182</a> <em class="jxr_javadoccomment">     *</em>
<a name="183" href="#183">183</a> <em class="jxr_javadoccomment">     * @return the value as an ISO8601 string</em>
<a name="184" href="#184">184</a> <em class="jxr_javadoccomment">     */</em>
<a name="185" href="#185">185</a>     String toString();
<a name="186" href="#186">186</a> 
<a name="187" href="#187">187</a> }
</pre>
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